Screen slide



Nov. 12, 1929. R. H. NATZKE SCREEN SLIDE Filed Marchl0, 1928 Q??? van iiez naz H'Nafjke p. W o

2 M, f a? w. J m F/m k m Patented Nov. 12, 1929 UNITED I STATES PATENT OFFICE REINOL H. NATZKE, OF CHICAGO, ILLINOIS, ASSIGNOR, BY DIRECT AND MESNE AS- SIGNMENTS, TO ELLIS JOHNSON, OF'CHICAGO, ILLINOIS SCREEN SLIDE 7 Application. filed March 10, 1928. Serial No. 260,566.

My invention relates to window screen slides or track-ways which are adapted to be secured to the sides of the frames in which the screens are fitted.

The conventional type of screen slide consists of a strip of wood nailed on the side of the frame, and considerable difficulty has been experienced in making a wood strip large enough for the strength required and still small enough to fit in a groove in the screen sash and yet have sufficient freedom of action, particularly in damp weather. It is common for'screens to stick and the fragile wooden slides to becemebrolzen in. the attempt to lift the screens.

The object of my invention is to overcome these difficulties and disadvantages and 1 propose to provide rust-proof U-shaped metal members having stiffening flanges, and em ploy novel securing means therefor.

Another object of my invention is to provide a slide having very little frictional resistance on the edge of the screen sash or on the side of the groove in which the slide is fitted.

It is another object of my invention to provide a metal slide, relatively small in crosssection for permitting a relatively smaller groove to be made in thescrecn sash so that the sash will be stronger, slide easier and be more securely held in place than heretofore. In carrying out my invention, I employ a sheet-metal stamping of zinc or of a suitable rust-proof alloy and press the same'to substantially U-shape and form flanges on the free edges which stiffen the U-shaped member. For securing the slide to the frame, I may provide perforations through the U-portion or through an extended flange, through which nails may be driven. My invention also contemplates novel means for securing fastening nails within the U-member, by means of depressions made about the nail. The depressions produce inwardly extending lugs which hold the nails in place and, in ad dition thereto, prevent sideward movement of the slide.

In order that those skilled in the artmay more thoroughly understand and be able to employ the same, I have shown in the accompanying drawings, a specific illustration of the preferred form of my invention.

Fig. 1 is an elevational View, partly in section, of a window-screen, showing my invention applied thereto;

Fig. 2 is a sectional view, taken on the line 22ofFig.1; I I I Fig. 3 is a perspective view of the slide, made in accordance with my invention Fig. 4: is a perspective view of a modified form of my invention;

F 5 is an enlarged vertical section, taken on the line 55 of Fig. 4; v Fig. 6 is a sectional View, taken on the line (3+6 of Fig. 5; and, I f Fig. 7 is a perspective View of another modification of my invention.

The frame 10 may be of any suitable construction of suflicient strength to adequately hold the screen sashes 11 in'place. A slide 12 is composed of sheet metal pressed to form I and comprising parallel "side, portions 13 joined together by a curved portion 1 1. On the free ends of the side portions13 are laterally extending stiffening flanges 15, positioned at right angles to the said side portions.

The U-portion 14 is provided with perforations 16 in the top thereof for the reception of finishing nails 17, which pass between the parallel side portions and into the frame 10 for securing the slide in place and the flanges down tightly upon the frame, as shown in Figures 1 and .2. The flanges 15 cause the slide 13 to extend in a straight line so that the groove 18 in'the screen sash need not be as wide as was heretofore necessary to allow for crooked wooden slides.

By theuse of the narrow groove 18, more body is left on the sash, thereby greatly strengthening the side portions 21. The

groove 18 is preferably rounded at 19 and of which the screen 22 is secured by means of a suitable strip 23.

V In Figures 4, 5 and 6, I have shown a modification of my invention, in which nails 24 are rigidly secured in place, so that the surface 14 is left smooth and continuous. For this purpose, I preferably employ a nail having a head 25 rounded at the top, to conform to the shape of the inner side of the U-portion 1 as shown in Figure 6. After the nail is inserted, I make depressions or indentations 26 and 27 in the sides of the members 13, which cause inwardly extending lugs 28 to en gage below the head and around the body portion of the nails, for rigidly securing them in place. This arrangement facilitates nailing the slide in place and prevents sidewa-rcl movement of the slide at the base.

In Figure 7, I show another form of my in vention, similar to that shown in Figure 3, except that it is particularly adaptable to a wider frame where the width of the base flanges are not limited by the'available space, and therefore I provide a wide flange 29 on one side and provide the same with perforations 30 for the reception of fastening nails, instead of using the perforations 16, shown in Figure 8. 7

It will be apparent to those skilled in the art that this may be varied without departing from the spirit of the invention and I do not intend to be limited to the details herein illustrated and described, but desire to avail my self of such variations as come within the scope of the appended claims.

I claim 1. As a new article of manufacture, a guide strip of substantially 'U-shape in cross-section, securing members each having a head fitting into the bight portion of the strip and completely enclosed thereby, and means securing said members against movement relative to the strip and in position projecting beyond the strip for engagement into a support.

2. As a new article of manufacture, a guide strip of substantially U-shape in cross-section, securing members each comprising a shank and a rounded head of increased diameter fitting into the bight portion of the strip and completely enclosed thereby, the strip having elements projecting inwardly from the sides thereof and cooperating with the head and shank of the respective securing members for holding the same against move ment relative to the strip, said securing members projecting outwardly beyond the strip forenga'gement into a support. 7

In witness whereof, I hereunto subscribe my name this 6th day of March, 1928.

REINOL H. NATZKE. 

